<template>
   <div class="pack">
       <input type="text"
        :value="input"
        @input="input=$event.target.value"
        placeholder="请输入内容">
        {{input}}
   </div>
</template>

<script>
export default {
   data(){
       return{
           input:''
       }
   }
}
</script>

<style>

</style>